KFU. Card publication. Polyquercetin/MWNT-Modified Electrode for the Determination of Natural Phenolic Antioxidants

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FEDERAL UNIVERSITY

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POLYQUERCETIN/MWNT-MODIFIED ELECTRODE FOR THE DETERMINATION OF NATURAL PHENOLIC ANTIOXIDANTS

Form of presentation

Articles in international journals and collections

Year of publication

2017

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Authors, employees of KFU

Budnikov German Konstantinovich, author

Guss Ekaterina Valerevna, author

Ziyatdinova Guzel Kamilevna, author

Authors, postgraduates KFU

Guss Ekaterina Valerevna, postgraduate kfu

Bibliographic description in the original language

Ziyatdinova G. Polyquercetin/MWNT-modified electrode for the determination of natural phenolic antioxidants / G. Ziyatdinova, E. Kozlova, H. Budnikov // Electroanalysis. - 2017. - V. 29. - � 11 . - P. 2610-2619.

Annotation

Novel highly sensitive voltammetric method for the gallic acid, catechin and epigallocatechin gallate (EGCG) quantification has been developed using glassy carbon electrode modified with multi-walled carbon nanotubes and polyquercetin (polyquercetin/MWNT/GCE). The effect of electropolymerization parameters (number of cycles, monomer concentration and polarization window) on the electrode characteristics has been evaluated. The electrode surface has been characterized with SEM, CV and EIS. The linear dynamic ranges of 0.50?10 and 10?750 mM for gallic acid, 0.10?10 and 10.0?250 mM for catechin and 0.050?10 and 10?100 mM for EGCG have been obtained in differential pulse mode with the detection limits of 0.10, 0.024 and 0.014 mM, respectively. The approach has been successfully applied for the tea antioxidant capacity evaluation (AOC). The positive correlations with antioxidant activity towards DPPH* and total phenolics (r=0.7845 and 0.7658 at rcrit=0.4227, n=22) have been obtained.

Keywords

Voltammetry, electropolymerization, nanotubes, antioxidants, food analysis

The name of the journal

ELECTROANALYSIS

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85028969949&doi=10.1002%2felan.201700440&partnerID=40&md5=55a5b232d6b55307081b52b55860ca36

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=168227&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Budnikov German Konstantinovich	ru_RU
dc.contributor.author	Guss Ekaterina Valerevna	ru_RU
dc.contributor.author	Ziyatdinova Guzel Kamilevna	ru_RU
dc.contributor.author	Guss Ekaterina Valerevna	ru_RU
dc.date.accessioned	2017-01-01T00:00:00Z	ru_RU
dc.date.available	2017-01-01T00:00:00Z	ru_RU
dc.date.issued	2017	ru_RU
dc.identifier.citation	Ziyatdinova G. Polyquercetin/MWNT-modified electrode for the determination of natural phenolic antioxidants / G. Ziyatdinova, E. Kozlova, H. Budnikov // Electroanalysis. - 2017. - V. 29. - � 11 . - P. 2610-2619.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=168227&p_lang=2	ru_RU
dc.description.abstract	ELECTROANALYSIS	ru_RU
dc.description.abstract	Novel highly sensitive voltammetric method for the gallic acid, catechin and epigallocatechin gallate (EGCG) quantification has been developed using glassy carbon electrode modified with multi-walled carbon nanotubes and polyquercetin (polyquercetin/MWNT/GCE). The effect of electropolymerization parameters (number of cycles, monomer concentration and polarization window) on the electrode characteristics has been evaluated. The electrode surface has been characterized with SEM, CV and EIS. The linear dynamic ranges of 0.50?10 and 10?750 mM for gallic acid, 0.10?10 and 10.0?250 mM for catechin and 0.050?10 and 10?100 mM for EGCG have been obtained in differential pulse mode with the detection limits of 0.10, 0.024 and 0.014 mM, respectively. The approach has been successfully applied for the tea antioxidant capacity evaluation (AOC). The positive correlations with antioxidant activity towards DPPH* and total phenolics (r=0.7845 and 0.7658 at rcrit=0.4227, n=22) have been obtained.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Voltammetry	ru_RU
dc.subject	electropolymerization	ru_RU
dc.subject	nanotubes	ru_RU
dc.subject	antioxidants	ru_RU
dc.subject	food analysis	ru_RU
dc.title	Polyquercetin/MWNT-Modified Electrode for the Determination of Natural Phenolic Antioxidants	ru_RU
dc.type	Articles in international journals and collections	ru_RU